Steel CP600
CP600 is a fine-grained ferrite-bainite complex-phase sheet steel with 430 MPa yield, 640 MPa tensile, 19 % elongation and about 195 HB.
Reference datasheet — CP600 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the CR condition
CP600 tempers and conditions
CP600 is supplied in 2 conditions, soft to hard. CR is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
CRDefault Cold rolled | Standard stocked condition for laser-cut blanks and parts that are painted or coated after forming. | 430 | 640 | 19 | 195 HB | 8.5 % IACS |
Hot rolled | Use for thicker chassis, suspension arms and wheel parts where cold-rolled gauges are not available. | 470 | 650 | 18 | 200 HB | 8.5 % IACS |
Supply forms, finishes and certifications
Ways CP600 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
EG | Electrogalvanized (ZE) complex-phase sheet | Coating |
GA | Galvannealed / zinc-iron alloy coated (ZF), HCT600XG | Coating |
GI | Hot-dip galvanized (Z), HCT600X / CR350Y600T-CP GI | Coating |
What is CP600?
CP600 is a fine-grained ferrite-bainite complex-phase sheet steel with 430 MPa yield, 640 MPa tensile, 19 % elongation and about 195 HB. Its uniform microstructure gives high edge stretchability and hole-expansion capacity, so it is chosen for flanged and pierced chassis parts; it is available cold-rolled, hot-rolled and coated as GI, GA or EG. Global formability (score 58) is lower than TRIP or DP at the same strength, springback is significant, and bare stock needs a coating system for corrosion protection. TRIP600 is the alternative when deep draw rather than edge stretch controls the design. CP600 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F). CP600 has a yield strength of 430 MPa (62.4 ksi) and a tensile strength of 640 MPa (92.8 ksi) — weaker than 51% of steel grades. Elongation at break is 19% and the elastic modulus is 210 GPa (30.5 Msi).
What is CP600 used for?
- chassis parts
- suspension arms
- flanged brackets
Advantages
- Readily welded — 78/100, better than 78% of steel grades
Limitations
- Limited service temperature — 250°C (482 °F), worse than 85% of steel grades
CP600 properties
Typical room-temperature values for CP600-CR; bars are the position among steel grades.
Physical3
CP600 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F).
Mechanical15
CP600 has a yield strength of 430 MPa (62.4 ksi) and a tensile strength of 640 MPa (92.8 ksi) — weaker than 51% of steel grades. Elongation at break is 19% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
CP600 is rated for continuous service to 250°C (482 °F). It conducts heat at 45 W/m·K (26 BTU/hr·ft·°F), better than 66% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
CP600 conducts electricity at 8.5 % IACS, better than 63% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of CP600 takes about 29 MJ of energy and emits 2.2 kg of CO₂ — less than 53% of steel grades. Typical recycled content is 25%.
Manufacturability7
CP600's machinability is fair (42/100, worse than 73% of steel grades); weldability very good (78/100); formability good (58/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the steel family
Yield strength against density for every steel grade FabDigit runs. CP600 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CP600
Is CP600 easy to machine?
Rarely machined — blank by laser, fine blanking or hard punching with high-hardness (PM/coated) tooling and 12–15 % punch clearance to limit burr and edge cracking.
Can CP600 be welded?
Good resistance spot weldability at low carbon equivalent; use AWS D8.1M-type schedules with slightly higher force, and expect some HAZ softening with laser/MAG welding.
Can CP600 be formed, bent or molded?
Best-in-class hole expansion and stretch-flanging; design for high springback (die compensation, high blank-holder force) and avoid deep-draw geometries suited to DP/TRIP steel.
CP600 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| CEN 10346 HCT600C maximum | ≤ 0.18 | 0.1 |
| Si | ≤ 0.8 | 0.3 |
| Mn | ≤ 2 | 1.6 |
| P | ≤ 0.08 | 0.02 |
| S | ≤ 0.02 | 0 |
| Altotal Al | ≤ 2 | 0.04 |
| Cr+Mosum | ≤ 1 | 0.3 |
| Nb+Timicroalloy precipitation strengthening | ≤ 0.15 | 0.06 |
| V | ≤ 0.2 | |
| B | ≤ 0.01 | |
| Fe | balance |
What surface finishes work on CP600?
Zinc coating (GI/GA/EG) plus phosphate and e-coat/paint is the standard system; no anodizing, and avoid hydrogen-charging pickling or acid plating on the strongest lots.
Surface treatments FabDigit runs on steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Black / Phosphate
Thermal Spray
How much does CP600 cost?
CP600 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
CP600 — frequently asked
What is CP600 used for?
CP600 is typically used for chassis parts, suspension arms and flanged brackets. In short: best hole expansion at 600 MPa; highest weldability in family; edge-crack resistant CP grade.
What is the yield strength of CP600?
CP600 has a typical yield strength of 430 MPa (62.4 ksi) and a tensile strength of 640 MPa (92.8 ksi) — weaker than 51% of steel grades. Strength varies by condition: see the 2 listed tempers.
Is CP600 easy to machine?
Not especially — machinability is rated fair (42/100, worse than 73% of steel grades). Rarely machined — blank by laser, fine blanking or hard punching with high-hardness (PM/coated) tooling and 12–15 % punch clearance to limit burr and edge cracking.
Can CP600 be welded?
Yes — weldability is rated very good (78/100). Good resistance spot weldability at low carbon equivalent; use AWS D8.1M-type schedules with slightly higher force, and expect some HAZ softening with laser/MAG welding.
What surface finishes work on CP600?
Zinc coating (GI/GA/EG) plus phosphate and e-coat/paint is the standard system; no anodizing, and avoid hydrogen-charging pickling or acid plating on the strongest lots.
Can CP600 be formed, bent or molded?
Best-in-class hole expansion and stretch-flanging; design for high springback (die compensation, high blank-holder force) and avoid deep-draw geometries suited to DP/TRIP steel.
What is the maximum service temperature of CP600?
CP600 is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CP600-CR and CP600-HR?
CR is the default condition — standard stocked condition for laser-cut blanks and parts that are painted or coated after forming. HR: use for thicker chassis, suspension arms and wheel parts where cold-rolled gauges are not available. Yield strength is 430 MPa in CR versus 470 MPa in HR.
How much does CP600 cost?
CP600 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 10346 — Continuously hot-dip coated steel flat products (HCT600C/HCT600X) — CEN (2015)
- VDA 239-100 — Sheet steel for cold forming (CR350Y600T-CP) — VDA (2016)
- GB/T 20564 — Cold rolled high strength steel sheet for automobile ( CP) — SAC (2019)
- Advanced High-Strength Steels Application Guidelines V7 — WorldAutoSteel (2021)
- Complex-phase steel CP-W / CP-K product information — thyssenkrupp Steel Europe (2022)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.